<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <h1>这是第二张网页</h1>

    <a href="http://123.56.78.219:8889">回到首页</a>

    <a href="http://123.56.78.219:8889/x/y/world.html">到第三张网页</a>
</body>

</html>